The build system is okay, but it is lacking in some areas, but Sublime is text editor not an IDE, so the fact that it has even this I feel is a bonus. With that said, I actually never use it. I simply initiate my builds via a batch file, shell script, makefile, or some other script from the command line for my given project and platform. I like to use my editor to edit, and I build via command line. That's just me though.